6. Intelligent traffic and alarm counters that calculate traffic flow and resultant alarms.7. Tamper-Proof: Operate program is protected by password.8. Adjustable operating frequencies---eliminate the potential effects from X-ray units, radios and other electrical interference sources9. Mix distance between two Walk-thru: 0.3 meters at low sensitivity, 0.5 meters at high sensitivity

10. Harmless to pregnant woman and heart pacemaker.11. Two LED light bars on both door panels: Gives alarm corresponding to the height or human body.12. With remote controller13. Perfect weather-proofing design: Can work in heavy rain.